mvc模式大家都很清楚了！最大的好处就是条理清晰一点，view和数据分开，在viewController中只要处理view和数据的逻辑就好了，甚至于逻辑都在model中处理，嗯想说什么呢，过去两个礼拜吧，都在做一件很挫的事情：model都是这样子写的：
@interface SPExangeModel : NSObject /*! * 模型属性 */ @property (nonatomic, copy) NSString * city; @property (nonatomic, copy) NSString * content; @property (nonatomic, copy) NSString * create_time; @property (nonatomic, copy) NSString * credits; @property (nonatomic, copy) NSString * eid; @property (nonatomic, copy) NSString * exchange_time; @property (nonatomic, copy) NSString * exchanged; @property (nonatomic, copy) NSString * _id; @property (nonatomic, copy) NSString * image; @property (nonatomic, copy) NSString * key; @property (nonatomic, copy) NSString * num; @property (nonatomic, copy) NSString * status; @property (nonatomic, copy) NSString * surplus; @property (nonatomic, copy) NSString * tag; @property (nonatomic, copy) NSString * title; @end
然后不遗余力的再实现文件中这么写：
@implementation SPExangeModel
- (id)initWithDictionary:(NSDictionary *)dictionary
{
self = [super init];
if (self)
{
self.city = SPFormatstring(dictionary[@"city"]);
self.content = SPFormatstring(dictionary[@"content"]);
self.create_time = dictionary[@"create_time"];
self.credits = SPFormatstring(dictionary[@"credits"]);
self.eid = SPFormatstring(dictionary[@"eid"]);
self.exchange_time = dictionary[@"exchange_time"];
self.exchanged = SPFormatstring(dictionary[@"exchanged"]);
self._id = SPFormatstring(dictionary[@"id"]);
self.image = dictionary[@"image"];
self.key = dictionary[@"key"];
self.num = dictionary[@"num"];
self.status = SPFormatstring(dictionary[@"status"]);
self.surplus = SPFormatstring(dictionary[@"surplus"]);
self.tag = SPFormatstring(dictionary[@"tag"]);
self.title = dictionary[@"title"];
}
return self;
}
@end
当然，一个类的话无所谓了，可是当道后来，model增加到了几十个之后，嗯，我自己崩溃了，这真的是在搬砖，翻阅了一下runtime头文件，比较有意思，恰好熟悉C#，因为C#中java中都有反射这种说法，所以处理起来就容易很多，嗯ios中也是有的，下面看看改进版本的
model基类：
#import <Foundation/Foundation.h> @interface BaseModel : NSObject /*! * 使用字典初始化 * * @param dictionary 字典 * * @return 结果 */ - (id)initWithDictionary:(NSDictionary *)dictionary; //获取字典形式：即属性和值对应起来的字典 - (NSDictionary *)toDictionary; @end
#import "BaseModel.h"
#import <objc/runtime.h>
@interface BaseModel(BS)
/*!
* 获取属性列表
*
* @return 属性列表
*/
- (NSArray *)getPropertys;
@end
@implementation BaseModel
- (id)initWithDictionary:(NSDictionary *)dictionary
{
self = [super init];
if (self)
{
//自己属性列表
NSArray *keys = [self getPropertys];
//字典属性列表
NSArray *dicKeys = [dictionary allKeys];
__weak typeof(self) weakSelf = self;
[dicKeys enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
if ([keys containsObject:obj])
{
[weakSelf setValue:dictionary[obj] forKey:obj];
}
}];
}
return self;
}
- (NSArray *)getPropertys
{
NSMutableArray *propertys = [[NSMutableArray alloc] init];
unsigned int outCount, i;
objc_property_t *properties = class_copyPropertyList([self class], &outCount);
for (i=0; i<outCount; i++)
{
objc_property_t property = properties[i];
NSString * key = [[NSString alloc]initWithCString:property_getName(property) encoding:NSUTF8StringEncoding];
[propertys addObject:key];
}
return propertys;
}
- (NSDictionary *)toDictionary
{
NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];
//自己属性列表
NSArray *keys = [self getPropertys];
[keys enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
id value = [self valueForKey:obj];
if (value != nil)
{
[dictionary setObject:value forKey:obj];
}
}];
return dictionary;
}
@end
以后的mode就直接集成这个baseModel,然后调用初始化即可！！！！
原文：http://www.cnblogs.com/yangyu001/p/4148511.html